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Mycobacterium Infections, NontuberculousNCT02832843

Genome-Wide Association Study in Patients With Nontuberculous Mycobacterial Lung Disease

An observational study of Mycobacterium Infections, Nontuberculous, run by Seoul National University Hospital at 1 site in South Korea.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The aim of this study was to elucidate genetic susceptibility of patients with nontuberculous mycobacterial lung disease using genome-wide association study. Read more about this study

Who is it for?
Ages 18 to 75 yearsHealthy volunteers can take part
Conditions the study is for
Mycobacterium Infections, Nontuberculous
How many people
2,808 participants
Where
1 siteSouth Korea
Study dates
11 Jul 2016to 3 Oct 2019
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 75 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: Patients with NTM lung diseases and healthy control

Who may be able to join

  • Case: Patients with NTM lung disease satisfying diagnostic criteria suggested by American Thoracic Society
  • Control: Healthy subjects enrolled in the Korean Healthy Twin Study

Who cannot join

  • Case: none
  • Control: 1) Subjects who have respiratory symptoms including cough and sputum 2) Subjects who have abnormalities on chest radiography

Trial locations and contacts

1 site in 1 country.

South Korea1 site
  • Seoul National University Hospital

    Seoul, 110-744

Other trials in South Korea

About this study

Official title: Elucidation of Genetic Susceptibility of Patients With Nontuberculous Mycobacterial Lung Disease Using Genome-Wide Association Study

The aim of this study was to elucidate genetic susceptibility of patients with nontuberculous mycobacterial lung disease using genome-wide association study.

Read the detailed description

Nontuberculous mycobacteria (NTM) are ubiquitous environmental organisms. NTM lung disease is increasing, however, genetic susceptibility of patients with the disease have not been identified. To elucidate the genetic susceptibility of NTM lung disease, the investigators perform a genome-wide association study (GWAS) including patients with NTM lung disease and healthy controls (case : control = 1 : 3). The age-, sex-matched control group will be recruited from the Korean Healthy Twin Study.

Medical subject headings
Mycobacterium Infections, Nontuberculous

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

Study groups in NCT02832843
Study groupRoleWhat they receive
NTM lung diseasePatients with NTM lung disease satisfying American Thoracic Society guidelines
Healthy controlThe age-, sex-matched control subjects without pulmonary diseases

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Finding of single nucleotide polymorphisms (SNPs) associated with the risk of NTM lung disease compared with controls

    To identify SNPs related to NTM lung disease using logistic regression after controlling for confounders (GWAS statistical significance threshold, P < 5.00*E-08)

    Measured: Baseline

Secondary outcomes (3)
  1. Finding of SNPs associated with the risk of severe NTM lung disease compared with controls

    To identify SNPs related to severe NTM lung disease compared with controls using logistic regression after controlling for confounders (GWAS statistical significance threshold, P < 5.00*E-08)

    Measured: Baseline

  2. Finding of SNPs associated with the risk of severe NTM lung disease compared with mild NTM lung disease

    To identify SNPs related to severe NTM lung disease compared with mild NTM lung disease using logistic regression after controlling for confounders (GWAS statistical significance threshold, P < 5.00*E-08)

    Measured: Baseline

  3. Finding of SNPs associated with the risk of Mycobacterium avium complex lung disease versus M. abscessus lung disease versus controls

    To identify SNPs related to Mycobacterium avium complex lung disease versus M. abscessus lung disease versus controls using multinomial logistic regression after controlling for confounders (GWAS statistical significance threshold, P < 5.00*E-08)

    Measured: Baseline

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted14 Jul 2016 (estimated)
  2. Study start11 Jul 2016
  3. Primary completion20 Nov 2017
  4. Study completion3 Oct 2019

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Case-control
Time perspective
Cross-sectional
Enrolment
2,808 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02832843
Sponsor's protocol ID
H-1605-111-763
Status last verified
Dec 2019
First submitted
3 Jul 2016
Last updated
13 Dec 2019
Results posted
No
Data monitoring committee
No
Individual data sharing
No

Publications

  • Park YS, Lee CH, Lee SM, Yang SC, Yoo CG, Kim YW, Han SK, Shim YS, Yim JJ. Rapid increase of non-tuberculous mycobacterial lung diseases at a tertiary referral hospital in South Korea. Int J Tuberc Lung Dis. 2010 Aug;14(8):1069-71.

    PubMed 20626955
  • Yim JJ, Kim HJ, Kwon OJ, Koh WJ. Association between microsatellite polymorphisms in intron II of the human Toll-like receptor 2 gene and nontuberculous mycobacterial lung disease in a Korean population. Hum Immunol. 2008 Sep;69(9):572-6. doi: 10.1016/j.humimm.2008.06.003. Epub 2008 Jul 3.

    PubMed 18602432
  • Kim RD, Greenberg DE, Ehrmantraut ME, Guide SV, Ding L, Shea Y, Brown MR, Chernick M, Steagall WK, Glasgow CG, Lin J, Jolley C, Sorbara L, Raffeld M, Hill S, Avila N, Sachdev V, Barnhart LA, Anderson VL, Claypool R, Hilligoss DM, Garofalo M, Fitzgerald A, Anaya-O'Brien S, Darnell D, DeCastro R, Menning HM, Ricklefs SM, Porcella SF, Olivier KN, Moss J, Holland SM. Pulmonary nontuberculous mycobacterial disease: prospective study of a distinct preexisting syndrome. Am J Respir Crit Care Med. 2008 Nov 15;178(10):1066-74. doi: 10.1164/rccm.200805-686OC. Epub 2008 Aug 14.

    PubMed 18703788
  • Lee AR, Lee J, Choi SM, Seong MW, Kim SA, Kim M, Chae KO, Lee JS, Yim JJ. Phenotypic, immunologic, and clinical characteristics of patients with nontuberculous mycobacterial lung disease in Korea. BMC Infect Dis. 2013 Nov 25;13:558. doi: 10.1186/1471-2334-13-558.

    PubMed 24274658
  • Kim J, Seong MW, Kim EC, Han SK, Yim JJ. Frequency and clinical implications of the isolation of rare nontuberculous mycobacteria. BMC Infect Dis. 2015 Jan 9;15:9. doi: 10.1186/s12879-014-0741-7.

    PubMed 25572753
  • Kwak N, Lee CH, Lee HJ, Kang YA, Lee JH, Han SK, Yim JJ. Non-tuberculous mycobacterial lung disease: diagnosis based on computed tomography of the chest. Eur Radiol. 2016 Dec;26(12):4449-4456. doi: 10.1007/s00330-016-4286-6. Epub 2016 Mar 5.

    PubMed 26945763
  • Hill AV. Evolution, revolution and heresy in the genetics of infectious disease susceptibility. Philos Trans R Soc Lond B Biol Sci. 2012 Mar 19;367(1590):840-9. doi: 10.1098/rstb.2011.0275.

    PubMed 22312051
  • Sung J, Cho SI, Lee K, Ha M, Choi EY, Choi JS, Kim H, Kim J, Hong KS, Kim Y, Yoo KY, Park C, Song YM. Healthy Twin: a twin-family study of Korea--protocols and current status. Twin Res Hum Genet. 2006 Dec;9(6):844-8. doi: 10.1375/183242706779462822.

    PubMed 17254419
  • Li Y, Willer CJ, Ding J, Scheet P, Abecasis GR. MaCH: using sequence and genotype data to estimate haplotypes and unobserved genotypes. Genet Epidemiol. 2010 Dec;34(8):816-34. doi: 10.1002/gepi.20533.

    PubMed 21058334
  • Howie BN, Donnelly P, Marchini J. A flexible and accurate genotype imputation method for the next generation of genome-wide association studies. PLoS Genet. 2009 Jun;5(6):e1000529. doi: 10.1371/journal.pgen.1000529. Epub 2009 Jun 19.

    PubMed 19543373
  • 1000 Genomes Project Consortium; Abecasis GR, Altshuler D, Auton A, Brooks LD, Durbin RM, Gibbs RA, Hurles ME, McVean GA. A map of human genome variation from population-scale sequencing. Nature. 2010 Oct 28;467(7319):1061-73. doi: 10.1038/nature09534.

    PubMed 20981092
  • Ritchie MD, Hahn LW, Roodi N, Bailey LR, Dupont WD, Parl FF, Moore JH. Multifactor-dimensionality reduction reveals high-order interactions among estrogen-metabolism genes in sporadic breast cancer. Am J Hum Genet. 2001 Jul;69(1):138-47. doi: 10.1086/321276. Epub 2001 Jun 11.

    PubMed 11404819

Questions about this trial

What is this clinical trial studying?

An observational study of Mycobacterium Infections, Nontuberculous, run by Seoul National University Hospital at 1 site in South Korea.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 13 Dec 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in South Korea. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Finding of single nucleotide polymorphisms (SNPs) associated with the risk of NTM lung disease compared with controls (time frame: Baseline). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02832843, which also lists 12 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Dec 2019.

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